enum StandardScaleType { kScaleToFit, kCustomScale, k1_1, k1_2, k1_4, k1_5, k1_8, k1_10, k1_16, k1_20, k1_30, k1_40, k1_50, k1_100, k2_1, k4_1, k8_1, k10_1, k100_1, k1_128in_1ft, k1_64in_1ft, k1_32in_1ft, k1_16in_1ft, k3_32in_1ft, k1_8in_1ft, k3_16in_1ft, k1_4in_1ft, k3_8in_1ft, k1_2in_1ft, k3_4in_1ft, k1in_1ft, k1and1_2in_1ft, k3in_1ft, k6in_1ft, k1ft_1ft };